Light, heavy light, and asymmetry

Liang Han (U.S.T.C., Hefei, China), Chen Wang and Yifan Xiang (undergraduates at U.S.T.C.) and Siqi Yang (U.S.T.C. and now at U. of Iowa) are the primary analysts for this measurement.

DZero has used an asymmetry in dimuon events to measure the weak-force mixing angle sin2θW.

http://news.fnal.gov/2017/05/light-heavy-light-asymmetry/, by Leo Bellantoni

The most you can know

“Squeezing Water from a Rock” by Rebecca Gilbert

How much can you know from a limited data set? A look back of our estimates on the Top Quark mass when we had small amounts of data.

http://news.fnal.gov/2016/10/the-most-you-can-know/, by Leo Bellantoni

Matter and antimatter

No, really. It matters. Image: Harley Schwadron

No, really. It matters. Image: Harley Schwadron

DZero measured the difference in the rates of the decays B → μ ν D0 vs. B+ → μ+ ν D0.

http://news.fnal.gov/2016/09/matter-and-antimatter/, by Leo Bellantoni

Theta and Tau, two generations later

How can the Bs0 (“bee sub ess, zero”), or indeed any particle have different lifetimes when decaying into different particles? Getting the right answer to this question started quite some time ago.

http://news.fnal.gov/2016/04/theta-tau-two-generations-later/, by Leo Bellantoni.

DZero discovers a new particle consistent with a tetraquark

A new observation of the 4-quark bound state.

http://news.fnal.gov/2016/02/dzero-discovers-a-new-particle-consistent-with-a-tetraquark/, by Dmitri Denisov and Paul Grannis: the co-spokespersons for the DZero experiment.

Spin correlations in top pair production

Olena Karacheban, Slava Shary, Boris Tuchming, and SungWoo Youn

Measuring the spin of top quarks, and wet driveways.

http://news.fnal.gov/2016/01/spin-correlations-in-top-pair-production/, by Leo Bellantoni.

Two for the price of one

It is possible to create both a J/ψ (“Jay Sigh”) and an Υ (“OOPS-i-lon”) simultaneously. What we learn from these events has a lot to do with the way quarks are stuck together inside the proton.

http://www.fnal.gov/pub/today/archive/archive_2015/today15-11-12.html, by Leo Bellantoni.

When barns collide

Don Lincoln and Leo Belantoni

What is a barn, anyway? It is a unit of cross section that particle physicists use. This is important when trying to measure double-parton scattering.

http://www.fnal.gov/pub/today/archive/archive_2015/today15-09-10.html, by Leo Belantoni.